Retrieves the text that is displayed as the text cue, or tip, in an edit control when the control is empty.
For the first overload, true if the method is successful; otherwise false.
For the second overload, a CString that contains the cue text if the method is successful; otherwise, the empty string ("").
This control is supported in Windows XP and later.
Additional requirements for this method are described in Build Requirements for Windows Vista Common Controls.